Introduction
This is a guide on how to replace the logic board on your Blackberry 7510.
Tools
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            Remove the six T6 Torx screws on the back of the phone. 
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            Make sure to keep the screws somewhere that they will not get lost. 
 
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            Using your finger nail or a spudger, carefully pry up the back cover. 
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            Begin in one spot and slowly circle around the device as you pry up all of the back cover. 
 
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            Using your spudger, carefully pry off back plate. 
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            Use the same technique as with the plastic back cover. Circle around the back plate until all of it is pried up. 
 
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            Carefully pry the screen from the board with your spudger. 
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            After prying it up, remove the screen from the board. 
 
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            Unscrew center T6 Torx screw in the center of the logic board. 
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            Remove the logic board from the phone. 
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            Replace with new logic board. 
 
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To reassemble your device, follow these instructions in reverse order.